Reference only — not for real-world navigation.
91C
Sauk-Prairie Airport · Prairie Du Sac
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
832 ft / 254 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
18/36 · 2,936 ft · ASPH-GLIGHTEDFlight Planning
Quick Jump to Next Destination
Tip: Search your next airport to quickly compare ILS data.
Welcome to the technical flight briefing for Sauk-Prairie Airport (91C), located in Prairie Du Sac, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 1 active runway with a maximum elevation of 832 ft. Please note that this field primarily supports VFR and visual approach procedures.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.
Full Name
Sauk-Prairie Airport
ICAO / IATA
91C / —
Municipality
Prairie Du Sac
Country
Region
US-WI — Wisconsin
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
832 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 18 / 36
LIGHTED
Runway Length: 2,936 ft / 895 m
Runway Width: 32 ft / 10 m
Surface Type: ASPH-G
Heading: —° / 263.2°
Runway Width: 32 ft / 10 m
Surface Type: ASPH-G
Heading: —° / 263.2°
RWY 18
No ILS / Visual Only
RWY 36 (263.2°)
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026